Roof construction



Dec.`3, 1940. A. s` MELLlNGl-:R

ROOF CONSTRUCTION 2 Sheets-Sheet 2 Filed Sept. 26, 1959 1N V EN TOR.

ATTORNEYS.

Patented Dec. 3, 1940 UNITED STATES PATENT oFFlcE ROOF CONSTRUCTION Arthur S. Mellinger, Indianapolis, Ind. Application September 26, 1939, Serial No. 296,691

1 Claim.

arrangement of parts and in the details of construction hereinafter described and claimed, it 15 being understood that changes in the precise embodiment of the invention herein described, may be made within the scope of what is claimed, without departing from the spirit of the invention. 20 Referring to the drawings:

Figure 1 is a plan view illustrating a roof constructed in accordance with the invention, the sheathing as partially covering the rafters of the structure.

25 Figure 2 is a side elevational view thereof.

Figure 3 is a sectional View taken on line 3--3 of Figure 2.

Referring to the drawings in detail, the roof structure embodies end members 5 that have 30 their upper surfaces curved in the arc of a circle, as clearly shown by Figure 3 of the drawings.

Bars 6 `connect the end members 5 at points near the lower edges thereof, the bars 6 having beveled upper surfaces. Connecting the bars 6,

35 are rods I that are supplied with nuts 8 at their ends, whereby the rods may be securely held in openings of the bars 6, to prevent spreading of the roof, under excessive weight.

Rafters 9 are arranged in parallel spaced re- 40 lation with respect to each other, and extend throughout the entire distance between the end members 5.

These rafters 9 are covered by sheathing strips I that are diagonally disposed, as shown by Figure 1 of the drawings. Another llayer of sheathing strips indicated at Il covers the sheathing strips I0, the strips ll being disposed diagonally in a direction opposite to the diagonal sheathing strips I9, and completely covering the sheathing strips I0.

The number of layers of sheathing strips Hl and Il, will of course be governed by the size of the roof under construction, land the number of layers of sheathing strips is not limited to two 'as shown in the drawings.

It might be also stated that the number of rods employed in bracing the roof against lateral spreading, may be varied according to the 10 length of the roof. In this connection, it might be stated that `the rods are spaced preferably fteen feet apart, and the size of the rods will of course be varied according to the weight of the structure.

Due to the construction shown and described it will be obvious that I have provided a roof construction which is exceptionally cheap to ,manufactura and one wherein truss rods are eliminated. It is further pointed `out that when the ceiling has been positioned over the inner surfaces of the rafters 9, all shoulders and girders which ordinarily catch sound waves to cause echoes, `are eliminated providing a roof of ex- 1 ceptional acoustic qualities. A roof of this structure also lends itself to the insulation of the roof, since the nature of ya lcurved surface causes an unequal pressure of the suns rays, which causes air currents at the surface of the roof which dissipate the heat.

What is claimed is:

An arched roof construction, comprising end members having curved upper edges, parallel bars connected With the end mem-bers near the lower ends of the curved upper edges, truss rods connecting said bars, spaced parallel rafters having their ends connected to the upper curved edges of the end member, a layer of sheathing strips bent over the rafters in engagement with the rafters lan'd disposed at oblique angles with re- 40 spect to the parallel bars, a layer of sheathing strips bent over the rst mentioned sheathing strips and disposed at oblique langles with respect to the parallel bars and the last mentioned v sheathing strips crossing the rst mentioned sheathing strips and contacting therewith, bracing the rafters and end members.

ARTHUR S. MELLINGER. 

